Agri-MCQs # 6: Sustainable Agriculture

Last updated on December 29th, 2020 at 08:31 pm

1. Shelf life of a bioherbicide is _______
oa. Six weeks b. Nine weeks
c. Twelve weeks d. Fifteen weeks

2. Bioherbicide has _________ to kill weeds
a. Microbial plant pathogens b Fungal spores
oc. Both a & b d. None of a & b

3. Bioherbicide can be applied as a _____________
a. Water spray b Sand mix application
oc. Both a & b d. None of a & b

4. BT cotton produce protein that makes cotton resistant against ________
a. Glyphosate b Round-up
oc. Both a & b d. Paraquot

5. Inhibition of Rhizobium spp. will result in _________ of green cropping
oa. Failure b Decrease
c. Increase d. None of these

6. Biofertilizers include _____________.
a. Rhizobium b Blue green algae
c. Mycorrhiza od. A, b & c

7. Integrated weed control includes only
a. Ecological approach b Biological approach
c. Cultural approach od. All of a, b and c

8. N-fixing biofertilizers are ___________
oa. Azotobacter b. Bacillus
c. Penicillium d. None of these

9. Organic farming depends on _____
a. Crop rotation b Organic manure
c. Biological pest control od. All a, b and c

10. In conventional agriculture emphasis is given on _________ recycling of ____
a. Crop residues b Animal waste
c. Municipal waste od. None of these

11. There is ___________ potential for utilization of crop residues
a. 25% b 40%
oc. 50% d. 75%

12. Organic farming deals with _________
a. Only crops B Agroforestry
c. Animal husbandry od. a, b & c

13. In organic agriculture rate of extraction from ______ do not exceed the rate of regeneration.
a. Forests B Underground water resources
c. None of a & b od. Both a and b

14. Use of ________ seed is not allowed in organic farming
a. Chemically treated B Genetically engineered
c. Transgenic od. None of these

15. Mycorrizae increase nutrient absorbing capacity of plant roots for _____
a. P b. K
c. Fe od. a, b & c

16. Root fungus like mycorrhizae can immobilize heavy metals like _________
a. Zn B Mn
c. Cd od. a, b & c

17. Dependence of cotton on mycorrhizae fungus is _________
oa. Very high b High
c. Low d. Very low

18. Non-persistent pollutants is ___________
a. Plastic b Pesticide
oc. Agricultural waste d. None of these

19. Primary air pollutant is _________
oa. N2O b NH3
c. Ozone d. None of these

20. Methane is released from _________
a. Paddy field b Livestock farm
c. Action of termites od. All a, b and c

21. Air pollution can
a. Raise earth temperature B Cause Ozone depletion
c. Cause acid rains od. All a, b & c

22. Examples of non-point source pollutants is
a. Oil spill b. Eroded soil
c. Fertilizer run-off od. Both b & c

23. Kinds of soil pollution are
a. Fertilizers B Industrial effluents
c. Pesticides od. All a, b & c

24. N fertilizer pollution can be avoided by
a. Balanced application B Split application
c. Nitrification inhibitor od. All a, b & c

25. In soils polluted with heavy metals liming can
a. Increase pH b Reduce metal solubility
c. Reduce metal availability od. All a, b & c

26. To minimize health hazards due to heavy metals following crops could be grown
a. Fruits b Cereals
c. Leaf vegetables od. Both a & b

27. Herbicides residues in the soil can be minimized by application of
a. FYM B Irrigation
c. Activated C od. All a, b & c

28. Green house effect is mainly due to
a. CH4 ob CO2
c. CFCs d. None of these

29. Radiation responsible for global warming is
oa. Infrared b. Ultraviolet
c. Gamma d. None of these

30. Contribution of CH4 towards global warming is
a. 10% ob 20%
c. 25% d. 30%

31. Concentration of CFCs in atmosphere is ______ times less than CO2
a. 1000 B 5000
oc. 10000 d. 20000

32. Contribution of CFCs towards global warming is ______ times more than CO2
a. 2000 b 3000
oc. 4000 d. None of these

33. Increase in atmospheric CO2 can increase
a. Photosynthesis b WUE
c. Respiration od. All a, b & c

34. Ultraviolet radiation can change
a. Plant composition b Biodiversity
c. Ecology od. All a, b & c

35. Biofertilizers produce
a. Harmones b Antibiotics
c. Vitamins od. All a, b & c

36. Nutrients are removed from the ecosystem in the form of
a. Crop harvest/animal products b. Leaching
c. Volatilization od. All a, b & c

37. In sustainable agriculture dependence on synthetic fertilizer and pesticide is
a. Mximum ob Minimum
c. Optimum d. Total

38. Soil degradation may be ______
a. Physical b Chemical
c. Biological od. All a, b & c

39. Inclusion of a ________ crop in crop rotation in salt affected areas leads to sustainable production
oa. Green manure b Rice
c. Barley d. Pearl millet

40.
Conveyance losses account for _________ of water delivered into a canal
oa. 40-50% b 20-25%
c. 20-50% d. 15-40%

41. Oilseed crops requiring less water can tolerate ______ level of salinity
a. Lower ob Higher
c. Medium d. Both a and c